CAMARO6 - View Single Post - Curious about vast difference in plug color

DorkMissile · 12-13-2018, 11:03 PM

So I am in the midst of doing a s/c install on my 1SS1LE, and as advised by my tuner I am switching to heat range 7 plugs.

After completing the work - while I was getting ready to throw the stockers in the recycling - I noticed there is a vast difference in color from one plug to the next.

Is this the multi-cylinder condition? Or is it looking to me like one plug is running significantly richer than the other? I am also so surprised how fouled they look for only having 5000 miles on them.

About the car - 4300miles / manual
Oil changed at 100 miles, 500 miles and 1000 miles. Car has had a Elite E2 can on it since it had 150 miles on it (intake has zero oil residue in it). Car had a RotoFab and BDX tuner on it prior (with canned map)

Thoughts?

12-13-2018, 11:03 PM	#1
DorkMissile Drives: DZ Join Date: Aug 2018 Location: Alaska Posts: 612	Curious about vast difference in plug color So I am in the midst of doing a s/c install on my 1SS1LE, and as advised by my tuner I am switching to heat range 7 plugs. After completing the work - while I was getting ready to throw the stockers in the recycling - I noticed there is a vast difference in color from one plug to the next. Is this the multi-cylinder condition? Or is it looking to me like one plug is running significantly richer than the other? I am also so surprised how fouled they look for only having 5000 miles on them. About the car - 4300miles / manual Oil changed at 100 miles, 500 miles and 1000 miles. Car has had a Elite E2 can on it since it had 150 miles on it (intake has zero oil residue in it). Car had a RotoFab and BDX tuner on it prior (with canned map) Thoughts?